Air tightness detection device for aluminum die casting

Abstract

The utility model discloses an aluminum die casting air tightness detection device, which relates to the technical field of motorcycle production, and comprises a base station, a support frame is fixedly connected to positions, close to four corners, of the upper side of the base station through stand columns, and a plurality of uniformly distributed hydraulic push rods are fixedly connected to the middle of the lower side of the support frame. The lower side of the hydraulic push rod is fixedly connected with a fixing table, and the inner side of the bottom wall of the fixing table is movably sleeved with a plurality of evenly-distributed fixing mechanisms. According to the aluminum die casting air tightness detection device of the utility model, the hydraulic push rod drives the fixed table to move downwards, so that the fixed rod is in contact with the outer side of a workpiece to fix the workpiece, and meanwhile, each movable pipe can move on the fixed table, so that the air tightness of the workpiece can be detected. Each fixed rod can drive the movable pipe to move according to the heights of different positions of the surface of the workpiece, so that a shape conforming to the outer contour of the workpiece is formed, and the purpose that the workpieces in different shapes share one detection platform can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle production technical field, especially a kind of aluminium die casting airtightness detection device. BACKGROUND

[0002] The sprocket cover for motorcycle is used for the sealing of sprocket, and needs to be detected for air tightness after die casting production to prevent leakage.

[0003] The prior art has the following problems:

[0004] Currently, the commonly used method is to use a mold matched in shape as support, and after sealing, gas is injected to check whether it leaks, which requires multiple different molds to adapt to different models of sprocket covers, and is high in cost and inconvenient to use. TECHNICAL CONTENT

[0005] The utility model provides a kind of aluminium die casting airtightness detection device to solve the problems raised in the above background.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of aluminium die casting airtightness detection device, including base, the upper side middle part of the base is fixedly connected with exhaust plate, the upper side of the base is movably installed with two lateral sealing mechanisms of left-right symmetry distribution near the position of left and right sides, the upper side of the base is fixedly connected with support frame by stand near the position of four corners, the lower side middle part of the support frame is fixedly connected with several evenly distributed hydraulic push rods, the lower side of the hydraulic push rod is fixedly connected with fixed table, the inner side of the bottom wall of the fixed table movably sleeved with several evenly distributed fixed mechanisms;

[0008] The fixed mechanism includes movable pipe, the outer side of the movable pipe is movably sleeved in the inner side of the bottom wall of fixed table, the lower surface of the movable pipe is fixedly connected with round plate, the outer side of the movable pipe is movably sleeved with first spring, and the first spring is located at the lower side of fixed table, the inner side of the movable pipe is movably sleeved with fixed rod, the lower side of the round plate is fixedly connected with limiting assembly.

[0009] Preferably, the lower end of the fixed rod is fixedly connected with flexible pad.

[0010] Preferably, the limiting assembly comprises a fixed seat, the upper side of the fixed seat is fixedly connected to the lower side of the circular plate, the lower side of the fixed seat is provided with a plurality of annularly distributed straight grooves, the inner side of each of the straight grooves is slidably connected with an insertion block, the outer side of the fixed seat is rotatably connected with a rotating seat, the inner side of the lower surface of the rotating seat is provided with a plurality of annularly distributed arc-shaped grooves, the inner side of each of the arc-shaped grooves is slidably connected with a moving block, the upper side of the moving block is slidably connected to the lower side of the insertion block, and the outer side of the insertion block is movably sleeved in the insertion groove formed in the outer side of the fixed rod.

[0011] Preferably, the insertion block is in the shape of a right trapezoid, and the inclined surface of the insertion block faces upward.

[0012] Preferably, a telescopic rod is fixedly connected between the inner side of each of the insertion blocks close to the fixed rod and the inner side of the straight groove, and a second spring is movably sleeved on the outer side of the telescopic rod.

[0013] Preferably, an insertion rod is movably sleeved on the inner side of the side wall of the fixed seat, a third spring is movably sleeved on the inner side of the side wall of the fixed seat, and the third spring is located on the side of the insertion rod close to the fixed rod, the outer side of the rotating seat is provided with a plurality of annularly distributed limiting holes, and the outer side of the insertion rod is movably sleeved in the inner side of the limiting hole.

[0014] Preferably, the side of the insertion rod away from the fixed rod is in the shape of a sphere.

[0015] Thanks to the above technical scheme, the present application has the following technical progress compared with the prior art:

[0016] 1. The aluminum die casting airtightness detection device provided by the present application cooperates the hydraulic push rod, the fixed table, the fixing mechanism, the movable pipe, the circular plate, the first spring, the fixed rod, the limiting assembly and the flexible pad, drives the fixed table to move downward through the hydraulic push rod, makes the fixed rod contact the outer side of the workpiece to fix it, simultaneously, since each movable pipe can move on the fixed table, each fixed rod can drive the movable pipe to move according to the height of different positions on the surface of the workpiece, and fix it by the first spring, so as to form a shape corresponding to the outer contour of the workpiece, thereby achieving the purpose of sharing one detection platform for workpieces of various shapes.

[0017] 2. The aluminum die casting airtightness detection device provided by the present application cooperates the fixed rod, the limiting assembly, the fixed seat, the straight groove, the insertion block, the rotating seat, the arc-shaped groove, the telescopic rod, the second spring, the insertion rod, the third spring, the limiting hole and the moving block, rotates the rotating seat, makes the insertion block insert or separate from the insertion groove, and then adjusts the initial height of the fixed rod, so as to avoid that the position of the workpiece is too high, and the fixing mechanism at the position provides too large pressure on the workpiece when fixing it, so as to cause the surface of the workpiece to deform. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the fixing platform part of this utility model;

[0020] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the fixing mechanism part of this utility model;

[0021] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the limiting component part of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the rotating seat part of this utility model.

[0023] In the diagram: 1. Base; 2. Exhaust plate; 3. Lateral sealing mechanism; 4. Support frame; 5. Hydraulic push rod; 6. Fixed platform; 7. Fixed mechanism; 71. Movable tube; 72. Circular plate; 73. First spring; 74. Fixed rod; 75. Limiting component; 751. Fixed seat; 752. Straight groove; 753. Insert block; 754. Rotating seat; 755. Arc groove; 756. Telescopic rod; 757. Second spring; 758. Insert rod; 759. Third spring; 7510. Limiting hole; 7511. Moving block; 76. Flexible pad. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-5 As shown, an airtightness testing device for aluminum die castings includes a base 1, an exhaust plate 2 fixedly connected to the upper center of the base 1, two lateral sealing mechanisms 3 movably installed on the upper side of the base 1 near the left and right sides, a support frame 4 fixedly connected to the upper side of the base 1 near the four corners via columns, a plurality of evenly distributed hydraulic push rods 5 fixedly connected to the lower center of the support frame 4, a fixed platform 6 fixedly connected to the lower side of the hydraulic push rods 5, and a plurality of evenly distributed fixing mechanisms 7 movably sleeved on the inner side of the bottom wall of the fixed platform 6.

[0026] The fixing mechanism 7 comprises a movable pipe 71 movably sleeved on the inner side of the bottom wall of the fixing table 6, the lower surface of the movable pipe 71 is fixedly connected with a circular plate 72, the outer side of the movable pipe 71 movably sleeved with a first spring 73, and the first spring 73 is located on the lower side of the fixing table 6, the inner side of the movable pipe 71 movably sleeved with a fixing rod 74, and the lower side of the circular plate 72 is fixedly connected with a limiting assembly 75.

[0027] It should be noted that the hydraulic push rod 5 can control the length of itself, so that the hydraulic push rod 5 drives the fixing table 6 to move up and down, and when the fixing table 6 moves down, the movable pipe 71 moves down, and the fixing rod 74 contacts the surface of the workpiece. Since each movable pipe 71 can move on the fixing table 6, the fixing rod 74 can adjust the position according to the outer contour of the workpiece, the first spring 73 pushes the circular plate 72, so that the fixing rod 74 fixes the workpiece, and when detecting, a thin metal soft plate is placed on the workpiece for the opening for ventilation, so that it is fixed with the workpiece by the fixing mechanism 7. By providing air holes on the metal soft plate, the workpiece is ventilated, the upper middle part of the exhaust plate 2 is provided with an air hole, and the left side of the exhaust plate 2 is connected with a pressure gauge near the front side. The pressure gauge detects the air pressure on the inner side of the workpiece through the air hole, so as to achieve the ability to detect the sealing performance of the workpiece. The lateral plugging mechanism 3 is provided with a cylinder and a sealing plate for plugging the openings on both sides of the workpiece.

[0028] As shown in Figure 3 , the lower end of the fixing rod 74 is fixedly connected with a flexible pad 76.

[0029] It should be noted that the flexible pad 76 is used to avoid direct contact between the fixing rod 74 and the workpiece, which causes the workpiece to be worn.

[0030] As shown in Figure 4 , Figure 5 , the limiting assembly 75 comprises a fixed seat 751 fixedly connected on the lower side of the circular plate 72, a plurality of annularly distributed straight grooves 752 are formed in the lower side of the fixed seat 751, a plurality of plug blocks 753 are slidably connected in the inner sides of the straight grooves 752, a rotating seat 754 is rotatably connected on the outer side of the fixed seat 751, a plurality of annularly distributed arc-shaped grooves 755 are formed in the inner lower surface of the rotating seat 754, a plurality of moving blocks 7511 are slidably connected in the inner sides of the arc-shaped grooves 755, the upper side of the moving block 7511 is slidably connected on the lower side of the plug block 753, and the outer side of the plug block 753 is movably sleeved in the plug groove formed on the outer side of the fixing rod 74.

[0031] It needs to be explained that rotating the rotating seat 754 causes the rotating seat 754 to drive the moving block 7511 to slide in the arc-shaped groove 755, cooperate with the plug block 753 to slide in the straight groove 752, cause the plug block 753 to move linearly in the straight groove, and cause all the plug blocks 753 to approach or move away from each other. When the plug block 753 is inserted into the insertion slot, the fixed rod 74 is fixed and inserted into the insertion slot of different heights by the plug block 753, so as to adjust the initial height of the fixed rod 74.

[0032] As shown in Figure 5 , the shape of the plug block 753 is a right trapezoid, and the inclined surface of the plug block 753 faces the upper side.

[0033] It needs to be explained that the shape of the plug block 753 allows the fixed rod 74 to be directly pulled down without rotating the rotating seat 754. The shape of the plug block 753 will automatically disengage from the insertion slot.

[0034] As shown in Figure 5 , the inner side of the plurality of plug blocks 753 close to the side of the fixed rod 74 and the inner side of the straight groove 752 are fixedly connected with the telescopic rod 756, and the outer side of the telescopic rod 756 movably sleeved with the second spring 757.

[0035] It needs to be explained that the second spring 757 pushes the plug block 753, so that the plug block 753 is reset after disengaging from the insertion slot.

[0036] As shown in Figure 4 , the inner side of the side wall of the fixed seat 751 movably sleeved with the plug rod 758, the inner side of the side wall of the fixed seat 751 movably sleeved with the third spring 759, and the third spring 759 is located on the side of the plug rod 758 close to the fixed rod 74. The outer side of the rotating seat 754 is provided with a plurality of annularly distributed limiting holes 7510, and the outer side of the plug rod 758 movably sleeved in the inner side of the limiting hole 7510.

[0037] It needs to be explained that the third spring 759 pushes the plug rod 758 to enter the inner side of the limiting hole 7510, so that the rotating seat 754 and the fixed seat 751 are fixed and cannot relatively rotate. A special tool is inserted into the inner side of the limiting hole 7510, so that the plug rod 758 is disengaged from the limiting hole 7510, so that the rotating seat 754 can rotate.

[0038] As shown in Figure 4 , the side of the plug rod 758 away from the fixed rod 74 is spherical.

[0039] It needs to be explained that the shape of the plug rod 758 causes the edge of the plug rod 758 not to interfere with the inner edge of the limiting hole 7510 when the plug rod 758 is disengaged from the limiting hole 7510 to drive the rotating seat 754 to rotate.

[0040] The working principle of the utility model is: firstly, the hydraulic push rod 5 can control its length, so that the hydraulic push rod 5 drives the fixed table 6 to move up and down, when the fixed table 6 moves down, drives the movable pipe 71 to move down, the fixed rod 74 contacts the workpiece surface, because each movable pipe 71 can move on the fixed table 6, so that the fixed rod 74 can rely on the workpiece contour adjustment position, the first spring 73 pushes the round plate 72, so that the fixed rod 74 fixes the workpiece, the flexible pad 76 is used to avoid the fixed rod 74 and the workpiece direct contact, causes the workpiece to be abraded, through the hydraulic push rod 5 drives the fixed table 6 to move down, so that the fixed rod 74 contacts the outside of the workpiece and fixes it, at the same time, because each movable pipe 71 can move on the fixed table 6, so that each fixed rod 74 can drive the movable pipe 71 to move according to the height of different positions on the workpiece surface, and is fixed by the first spring 73, to form the shape that conforms to the workpiece contour in this way, so that a detection platform for multiple different shapes of workpieces can be realized, finally, rotating the rotating seat 754, so that the rotating seat 754 drives the moving block 7511, makes it slide in the arc-shaped groove 755, cooperates the plug block 753, makes it slide in the straight slot 752, so that the plug block 753 moves linearly in the straight slot, so that all plug blocks 753 are close to or away from each other, when the plug block 753 is inserted into the insertion slot, the fixed rod 74 is fixed and relies on the plug block 753 to be inserted into the insertion slot of different height, to adjust the initial height of the fixed rod 74, the third spring 759 pushes the plug rod 758, so that it enters the inside of the limiting hole 7510, so that the rotating seat 754 and the fixed seat 751 are fixed, and relative rotation cannot occur between the two, special tools are inserted into the inside of the limiting hole 7510, so that the plug rod 758 is separated from the limiting hole 7510, so that the rotating seat 754 can rotate, by rotating the rotating seat 754, so that the plug block 753 is inserted or separated from the insertion slot, and then the initial height of the fixed rod 74 is adjusted, to avoid that the workpiece is too high in some position, so that the fixed mechanism 7 in this position provides too much pressure on the workpiece when fixing it, so that the surface of the workpiece is deformed.

[0041] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An apparatus for detecting the tightness of an aluminum die casting, comprising a base (1), characterized in that: The upper middle part of the base (1) is fixedly connected with an exhaust plate (2), the upper side of the base (1) is movably installed with two symmetrically distributed lateral blocking mechanisms (3) near the left and right sides, the upper side of the base (1) is fixedly connected with a support frame (4) near the four corners through a stand, the lower middle part of the support frame (4) is fixedly connected with a plurality of uniformly distributed hydraulic push rods (5), the lower side of the hydraulic push rod (5) is fixedly connected with a fixed table (6), and the inner side of the bottom wall of the fixed table (6) movably sleeves a plurality of uniformly distributed fixing mechanisms (7). The fixing mechanism (7) comprises an movable pipe (71), the outer side of the movable pipe (71) is movably sleeved on the inner side of the bottom wall of the fixed table (6), the lower surface of the movable pipe (71) is fixedly connected with a circular plate (72), the outer side of the movable pipe (71) movably sleeves a first spring (73), and the first spring (73) is located on the lower side of the fixed table (6), the inner side of the movable pipe (71) movably sleeves a fixed rod (74), and the lower side of the circular plate (72) is fixedly connected with a limiting assembly (75).

2. The aluminum die casting airtightness detection device according to claim 1, characterized in that: The lower end of the fixed rod (74) is fixedly connected with a flexible pad (76).

3. The apparatus for detecting the gas tightness of an aluminum die casting according to claim 1, wherein: The limiting assembly (75) comprises a fixed seat (751), the upper side of the fixed seat (751) is fixedly connected on the lower side of the circular plate (72), a plurality of annularly distributed straight grooves (752) are formed in the lower side of the fixed seat (751), the inner sides of the plurality of straight grooves (752) are slidably connected with plug blocks (753), the outer side of the fixed seat (751) is rotatably connected with a rotating seat (754), a plurality of annularly distributed arc-shaped grooves (755) are formed in the inner lower surface of the rotating seat (754), the inner sides of the plurality of arc-shaped grooves (755) are slidably connected with moving blocks (7511), the upper side of the moving block (7511) is slidably connected on the lower side of the plug block (753), and the outer side of the plug block (753) is movably sleeved in the plug groove formed on the outer side of the fixed rod (74).

4. The apparatus for detecting the gas tightness of an aluminum die casting according to claim 3, wherein: The shape of the plug block (753) is a right trapezoid, and the inclined surface of the plug block (753) faces the upper side.

5. The apparatus for detecting the gas tightness of an aluminum die casting according to claim 3, wherein: A plurality of telescopic rods (756) are fixedly connected between the inner side of the plug block (753) close to the fixed rod (74) and the inner side of the straight groove (752), and the outer side of the telescopic rod (756) movably sleeves a second spring (757).

6. The aluminum die casting gas tightness detection device according to claim 3, characterized in that: The inner side of the side wall of the fixed seat (751) movably sleeves a plug rod (758), the inner side of the side wall of the fixed seat (751) movably sleeves a third spring (759), and the third spring (759) is located on the side of the plug rod (758) close to the fixed rod (74), a plurality of annularly distributed limiting holes (7510) are formed in the outer side of the rotating seat (754), and the outer side of the plug rod (758) is movably sleeved in the inner side of the limiting hole (7510).

7. The apparatus according to claim 6, wherein: The side of the plug rod (758) away from the fixed rod (74) is spherical.

Images